By McCarty, Perry L., Sawyer, Clair Nathan
By Cairncross, Sandy, Carruthers, Ian, Curtis, Donald, Feachem, Richard G., Bradley, David J., Baldwin, George
By Chambers
By Shuval, Hillel I.
By Barnes, D., etc.
By Freeman, Harry M.
By Corbitt, Robert
By Pescod, M.B., Arar, A.
By Evans, Lloyd T.
By White, Damian, Rudy, Alan, Gareau, Brian
By Smil, Vaclav
By Bartow J. Elmore
By Ulrike Kirchberger (editor) & Brett M. Bennett (editor)
By Josephson, Paul R.
By Fox-Penner, Peter
By Goodman, Jordan
By Bessire, Lucas
By Schelvan, Christopher, Copeman, Annabel, Davis, Jacqueline, Jeanes, Annmarie, Young, Jane
By Clark, R.B.
By Marzluff, John M.
By Kupers, Roland
By Hayes, Denis, Boyer Hayes, Gail
By Wadman, Meredith
By Dickinson, Gordon
By Jørgensen, Finn Arne
By Küçük, Harun
By Hoffman, Catherine
By Mathews, Daniel
By van Tilburg, Aad, Moll, Henk A.J., Kuyvenhoven, A.
By Food and Agriculture Organization of the United Nations